mirror of
https://github.com/yuzu-emu/yuzu.git
synced 2024-07-04 23:31:19 +01:00
Merge pull request #5249 from ReinUsesLisp/lock-free-pages
core/memory: Read and write page table atomically
This commit is contained in:
commit
eb318ffffc
7 changed files with 132 additions and 147 deletions
|
@ -10,16 +10,10 @@ PageTable::PageTable() = default;
|
|||
|
||||
PageTable::~PageTable() noexcept = default;
|
||||
|
||||
void PageTable::Resize(std::size_t address_space_width_in_bits, std::size_t page_size_in_bits,
|
||||
bool has_attribute) {
|
||||
const std::size_t num_page_table_entries{1ULL
|
||||
<< (address_space_width_in_bits - page_size_in_bits)};
|
||||
void PageTable::Resize(size_t address_space_width_in_bits, size_t page_size_in_bits) {
|
||||
const size_t num_page_table_entries{1ULL << (address_space_width_in_bits - page_size_in_bits)};
|
||||
pointers.resize(num_page_table_entries);
|
||||
backing_addr.resize(num_page_table_entries);
|
||||
|
||||
if (has_attribute) {
|
||||
attributes.resize(num_page_table_entries);
|
||||
}
|
||||
}
|
||||
|
||||
} // namespace Common
|
||||
|
|
|
@ -4,6 +4,7 @@
|
|||
|
||||
#pragma once
|
||||
|
||||
#include <atomic>
|
||||
#include <tuple>
|
||||
|
||||
#include "common/common_types.h"
|
||||
|
@ -20,10 +21,6 @@ enum class PageType : u8 {
|
|||
/// Page is mapped to regular memory, but also needs to check for rasterizer cache flushing and
|
||||
/// invalidation
|
||||
RasterizerCachedMemory,
|
||||
/// Page is mapped to a I/O region. Writing and reading to this page is handled by functions.
|
||||
Special,
|
||||
/// Page is allocated for use.
|
||||
Allocated,
|
||||
};
|
||||
|
||||
struct SpecialRegion {
|
||||
|
@ -48,6 +45,59 @@ struct SpecialRegion {
|
|||
* mimics the way a real CPU page table works.
|
||||
*/
|
||||
struct PageTable {
|
||||
/// Number of bits reserved for attribute tagging.
|
||||
/// This can be at most the guaranteed alignment of the pointers in the page table.
|
||||
static constexpr int ATTRIBUTE_BITS = 2;
|
||||
|
||||
/**
|
||||
* Pair of host pointer and page type attribute.
|
||||
* This uses the lower bits of a given pointer to store the attribute tag.
|
||||
* Writing and reading the pointer attribute pair is guaranteed to be atomic for the same method
|
||||
* call. In other words, they are guaranteed to be synchronized at all times.
|
||||
*/
|
||||
class PageInfo {
|
||||
public:
|
||||
/// Returns the page pointer
|
||||
[[nodiscard]] u8* Pointer() const noexcept {
|
||||
return ExtractPointer(raw.load(std::memory_order_relaxed));
|
||||
}
|
||||
|
||||
/// Returns the page type attribute
|
||||
[[nodiscard]] PageType Type() const noexcept {
|
||||
return ExtractType(raw.load(std::memory_order_relaxed));
|
||||
}
|
||||
|
||||
/// Returns the page pointer and attribute pair, extracted from the same atomic read
|
||||
[[nodiscard]] std::pair<u8*, PageType> PointerType() const noexcept {
|
||||
const uintptr_t non_atomic_raw = raw.load(std::memory_order_relaxed);
|
||||
return {ExtractPointer(non_atomic_raw), ExtractType(non_atomic_raw)};
|
||||
}
|
||||
|
||||
/// Returns the raw representation of the page information.
|
||||
/// Use ExtractPointer and ExtractType to unpack the value.
|
||||
[[nodiscard]] uintptr_t Raw() const noexcept {
|
||||
return raw.load(std::memory_order_relaxed);
|
||||
}
|
||||
|
||||
/// Write a page pointer and type pair atomically
|
||||
void Store(u8* pointer, PageType type) noexcept {
|
||||
raw.store(reinterpret_cast<uintptr_t>(pointer) | static_cast<uintptr_t>(type));
|
||||
}
|
||||
|
||||
/// Unpack a pointer from a page info raw representation
|
||||
[[nodiscard]] static u8* ExtractPointer(uintptr_t raw) noexcept {
|
||||
return reinterpret_cast<u8*>(raw & (~uintptr_t{0} << ATTRIBUTE_BITS));
|
||||
}
|
||||
|
||||
/// Unpack a page type from a page info raw representation
|
||||
[[nodiscard]] static PageType ExtractType(uintptr_t raw) noexcept {
|
||||
return static_cast<PageType>(raw & ((uintptr_t{1} << ATTRIBUTE_BITS) - 1));
|
||||
}
|
||||
|
||||
private:
|
||||
std::atomic<uintptr_t> raw;
|
||||
};
|
||||
|
||||
PageTable();
|
||||
~PageTable() noexcept;
|
||||
|
||||
|
@ -63,20 +113,16 @@ struct PageTable {
|
|||
*
|
||||
* @param address_space_width_in_bits The address size width in bits.
|
||||
* @param page_size_in_bits The page size in bits.
|
||||
* @param has_attribute Whether or not this page has any backing attributes.
|
||||
*/
|
||||
void Resize(std::size_t address_space_width_in_bits, std::size_t page_size_in_bits,
|
||||
bool has_attribute);
|
||||
void Resize(size_t address_space_width_in_bits, size_t page_size_in_bits);
|
||||
|
||||
/**
|
||||
* Vector of memory pointers backing each page. An entry can only be non-null if the
|
||||
* corresponding entry in the `attributes` vector is of type `Memory`.
|
||||
* corresponding attribute element is of type `Memory`.
|
||||
*/
|
||||
VirtualBuffer<u8*> pointers;
|
||||
VirtualBuffer<PageInfo> pointers;
|
||||
|
||||
VirtualBuffer<u64> backing_addr;
|
||||
|
||||
VirtualBuffer<PageType> attributes;
|
||||
};
|
||||
|
||||
} // namespace Common
|
||||
|
|
|
@ -15,10 +15,12 @@ void FreeMemoryPages(void* base, std::size_t size) noexcept;
|
|||
template <typename T>
|
||||
class VirtualBuffer final {
|
||||
public:
|
||||
static_assert(
|
||||
std::is_trivially_constructible_v<T>,
|
||||
"T must be trivially constructible, as non-trivial constructors will not be executed "
|
||||
"with the current allocator");
|
||||
// TODO: Uncomment this and change Common::PageTable::PageInfo to be trivially constructible
|
||||
// using std::atomic_ref once libc++ has support for it
|
||||
// static_assert(
|
||||
// std::is_trivially_constructible_v<T>,
|
||||
// "T must be trivially constructible, as non-trivial constructors will not be executed "
|
||||
// "with the current allocator");
|
||||
|
||||
constexpr VirtualBuffer() = default;
|
||||
explicit VirtualBuffer(std::size_t count) : alloc_size{count * sizeof(T)} {
|
||||
|
|
|
@ -133,6 +133,7 @@ std::shared_ptr<Dynarmic::A32::Jit> ARM_Dynarmic_32::MakeJit(Common::PageTable&
|
|||
config.page_table = reinterpret_cast<std::array<std::uint8_t*, NUM_PAGE_TABLE_ENTRIES>*>(
|
||||
page_table.pointers.data());
|
||||
config.absolute_offset_page_table = true;
|
||||
config.page_table_pointer_mask_bits = Common::PageTable::ATTRIBUTE_BITS;
|
||||
config.detect_misaligned_access_via_page_table = 16 | 32 | 64 | 128;
|
||||
config.only_detect_misalignment_via_page_table_on_page_boundary = true;
|
||||
|
||||
|
|
|
@ -152,6 +152,7 @@ std::shared_ptr<Dynarmic::A64::Jit> ARM_Dynarmic_64::MakeJit(Common::PageTable&
|
|||
// Memory
|
||||
config.page_table = reinterpret_cast<void**>(page_table.pointers.data());
|
||||
config.page_table_address_space_bits = address_space_bits;
|
||||
config.page_table_pointer_mask_bits = Common::PageTable::ATTRIBUTE_BITS;
|
||||
config.silently_mirror_page_table = false;
|
||||
config.absolute_offset_page_table = true;
|
||||
config.detect_misaligned_access_via_page_table = 16 | 32 | 64 | 128;
|
||||
|
|
|
@ -265,7 +265,7 @@ ResultCode PageTable::InitializeForProcess(FileSys::ProgramAddressSpaceType as_t
|
|||
physical_memory_usage = 0;
|
||||
memory_pool = pool;
|
||||
|
||||
page_table_impl.Resize(address_space_width, PageBits, true);
|
||||
page_table_impl.Resize(address_space_width, PageBits);
|
||||
|
||||
return InitializeMemoryLayout(start, end);
|
||||
}
|
||||
|
|
|
@ -4,7 +4,6 @@
|
|||
|
||||
#include <algorithm>
|
||||
#include <cstring>
|
||||
#include <mutex>
|
||||
#include <optional>
|
||||
#include <utility>
|
||||
|
||||
|
@ -68,21 +67,8 @@ struct Memory::Impl {
|
|||
|
||||
bool IsValidVirtualAddress(const Kernel::Process& process, const VAddr vaddr) const {
|
||||
const auto& page_table = process.PageTable().PageTableImpl();
|
||||
|
||||
const u8* const page_pointer = page_table.pointers[vaddr >> PAGE_BITS];
|
||||
if (page_pointer != nullptr) {
|
||||
return true;
|
||||
}
|
||||
|
||||
if (page_table.attributes[vaddr >> PAGE_BITS] == Common::PageType::RasterizerCachedMemory) {
|
||||
return true;
|
||||
}
|
||||
|
||||
if (page_table.attributes[vaddr >> PAGE_BITS] != Common::PageType::Special) {
|
||||
return false;
|
||||
}
|
||||
|
||||
return false;
|
||||
const auto [pointer, type] = page_table.pointers[vaddr >> PAGE_BITS].PointerType();
|
||||
return pointer != nullptr || type == Common::PageType::RasterizerCachedMemory;
|
||||
}
|
||||
|
||||
bool IsValidVirtualAddress(VAddr vaddr) const {
|
||||
|
@ -100,17 +86,15 @@ struct Memory::Impl {
|
|||
}
|
||||
|
||||
u8* GetPointer(const VAddr vaddr) const {
|
||||
u8* const page_pointer{current_page_table->pointers[vaddr >> PAGE_BITS]};
|
||||
if (page_pointer) {
|
||||
return page_pointer + vaddr;
|
||||
const uintptr_t raw_pointer = current_page_table->pointers[vaddr >> PAGE_BITS].Raw();
|
||||
if (u8* const pointer = Common::PageTable::PageInfo::ExtractPointer(raw_pointer)) {
|
||||
return pointer + vaddr;
|
||||
}
|
||||
|
||||
if (current_page_table->attributes[vaddr >> PAGE_BITS] ==
|
||||
Common::PageType::RasterizerCachedMemory) {
|
||||
const auto type = Common::PageTable::PageInfo::ExtractType(raw_pointer);
|
||||
if (type == Common::PageType::RasterizerCachedMemory) {
|
||||
return GetPointerFromRasterizerCachedMemory(vaddr);
|
||||
}
|
||||
|
||||
return {};
|
||||
return nullptr;
|
||||
}
|
||||
|
||||
u8 Read8(const VAddr addr) {
|
||||
|
@ -222,7 +206,8 @@ struct Memory::Impl {
|
|||
std::min(static_cast<std::size_t>(PAGE_SIZE) - page_offset, remaining_size);
|
||||
const auto current_vaddr = static_cast<VAddr>((page_index << PAGE_BITS) + page_offset);
|
||||
|
||||
switch (page_table.attributes[page_index]) {
|
||||
const auto [pointer, type] = page_table.pointers[page_index].PointerType();
|
||||
switch (type) {
|
||||
case Common::PageType::Unmapped: {
|
||||
LOG_ERROR(HW_Memory,
|
||||
"Unmapped ReadBlock @ 0x{:016X} (start address = 0x{:016X}, size = {})",
|
||||
|
@ -231,10 +216,8 @@ struct Memory::Impl {
|
|||
break;
|
||||
}
|
||||
case Common::PageType::Memory: {
|
||||
DEBUG_ASSERT(page_table.pointers[page_index]);
|
||||
|
||||
const u8* const src_ptr =
|
||||
page_table.pointers[page_index] + page_offset + (page_index << PAGE_BITS);
|
||||
DEBUG_ASSERT(pointer);
|
||||
const u8* const src_ptr = pointer + page_offset + (page_index << PAGE_BITS);
|
||||
std::memcpy(dest_buffer, src_ptr, copy_amount);
|
||||
break;
|
||||
}
|
||||
|
@ -268,7 +251,8 @@ struct Memory::Impl {
|
|||
std::min(static_cast<std::size_t>(PAGE_SIZE) - page_offset, remaining_size);
|
||||
const auto current_vaddr = static_cast<VAddr>((page_index << PAGE_BITS) + page_offset);
|
||||
|
||||
switch (page_table.attributes[page_index]) {
|
||||
const auto [pointer, type] = page_table.pointers[page_index].PointerType();
|
||||
switch (type) {
|
||||
case Common::PageType::Unmapped: {
|
||||
LOG_ERROR(HW_Memory,
|
||||
"Unmapped ReadBlock @ 0x{:016X} (start address = 0x{:016X}, size = {})",
|
||||
|
@ -277,10 +261,8 @@ struct Memory::Impl {
|
|||
break;
|
||||
}
|
||||
case Common::PageType::Memory: {
|
||||
DEBUG_ASSERT(page_table.pointers[page_index]);
|
||||
|
||||
const u8* const src_ptr =
|
||||
page_table.pointers[page_index] + page_offset + (page_index << PAGE_BITS);
|
||||
DEBUG_ASSERT(pointer);
|
||||
const u8* const src_ptr = pointer + page_offset + (page_index << PAGE_BITS);
|
||||
std::memcpy(dest_buffer, src_ptr, copy_amount);
|
||||
break;
|
||||
}
|
||||
|
@ -320,7 +302,8 @@ struct Memory::Impl {
|
|||
std::min(static_cast<std::size_t>(PAGE_SIZE) - page_offset, remaining_size);
|
||||
const auto current_vaddr = static_cast<VAddr>((page_index << PAGE_BITS) + page_offset);
|
||||
|
||||
switch (page_table.attributes[page_index]) {
|
||||
const auto [pointer, type] = page_table.pointers[page_index].PointerType();
|
||||
switch (type) {
|
||||
case Common::PageType::Unmapped: {
|
||||
LOG_ERROR(HW_Memory,
|
||||
"Unmapped WriteBlock @ 0x{:016X} (start address = 0x{:016X}, size = {})",
|
||||
|
@ -328,10 +311,8 @@ struct Memory::Impl {
|
|||
break;
|
||||
}
|
||||
case Common::PageType::Memory: {
|
||||
DEBUG_ASSERT(page_table.pointers[page_index]);
|
||||
|
||||
u8* const dest_ptr =
|
||||
page_table.pointers[page_index] + page_offset + (page_index << PAGE_BITS);
|
||||
DEBUG_ASSERT(pointer);
|
||||
u8* const dest_ptr = pointer + page_offset + (page_index << PAGE_BITS);
|
||||
std::memcpy(dest_ptr, src_buffer, copy_amount);
|
||||
break;
|
||||
}
|
||||
|
@ -364,7 +345,8 @@ struct Memory::Impl {
|
|||
std::min(static_cast<std::size_t>(PAGE_SIZE) - page_offset, remaining_size);
|
||||
const auto current_vaddr = static_cast<VAddr>((page_index << PAGE_BITS) + page_offset);
|
||||
|
||||
switch (page_table.attributes[page_index]) {
|
||||
const auto [pointer, type] = page_table.pointers[page_index].PointerType();
|
||||
switch (type) {
|
||||
case Common::PageType::Unmapped: {
|
||||
LOG_ERROR(HW_Memory,
|
||||
"Unmapped WriteBlock @ 0x{:016X} (start address = 0x{:016X}, size = {})",
|
||||
|
@ -372,10 +354,8 @@ struct Memory::Impl {
|
|||
break;
|
||||
}
|
||||
case Common::PageType::Memory: {
|
||||
DEBUG_ASSERT(page_table.pointers[page_index]);
|
||||
|
||||
u8* const dest_ptr =
|
||||
page_table.pointers[page_index] + page_offset + (page_index << PAGE_BITS);
|
||||
DEBUG_ASSERT(pointer);
|
||||
u8* const dest_ptr = pointer + page_offset + (page_index << PAGE_BITS);
|
||||
std::memcpy(dest_ptr, src_buffer, copy_amount);
|
||||
break;
|
||||
}
|
||||
|
@ -414,7 +394,8 @@ struct Memory::Impl {
|
|||
std::min(static_cast<std::size_t>(PAGE_SIZE) - page_offset, remaining_size);
|
||||
const auto current_vaddr = static_cast<VAddr>((page_index << PAGE_BITS) + page_offset);
|
||||
|
||||
switch (page_table.attributes[page_index]) {
|
||||
const auto [pointer, type] = page_table.pointers[page_index].PointerType();
|
||||
switch (type) {
|
||||
case Common::PageType::Unmapped: {
|
||||
LOG_ERROR(HW_Memory,
|
||||
"Unmapped ZeroBlock @ 0x{:016X} (start address = 0x{:016X}, size = {})",
|
||||
|
@ -422,10 +403,8 @@ struct Memory::Impl {
|
|||
break;
|
||||
}
|
||||
case Common::PageType::Memory: {
|
||||
DEBUG_ASSERT(page_table.pointers[page_index]);
|
||||
|
||||
u8* dest_ptr =
|
||||
page_table.pointers[page_index] + page_offset + (page_index << PAGE_BITS);
|
||||
DEBUG_ASSERT(pointer);
|
||||
u8* const dest_ptr = pointer + page_offset + (page_index << PAGE_BITS);
|
||||
std::memset(dest_ptr, 0, copy_amount);
|
||||
break;
|
||||
}
|
||||
|
@ -461,7 +440,8 @@ struct Memory::Impl {
|
|||
std::min(static_cast<std::size_t>(PAGE_SIZE) - page_offset, remaining_size);
|
||||
const auto current_vaddr = static_cast<VAddr>((page_index << PAGE_BITS) + page_offset);
|
||||
|
||||
switch (page_table.attributes[page_index]) {
|
||||
const auto [pointer, type] = page_table.pointers[page_index].PointerType();
|
||||
switch (type) {
|
||||
case Common::PageType::Unmapped: {
|
||||
LOG_ERROR(HW_Memory,
|
||||
"Unmapped CopyBlock @ 0x{:016X} (start address = 0x{:016X}, size = {})",
|
||||
|
@ -470,9 +450,8 @@ struct Memory::Impl {
|
|||
break;
|
||||
}
|
||||
case Common::PageType::Memory: {
|
||||
DEBUG_ASSERT(page_table.pointers[page_index]);
|
||||
const u8* src_ptr =
|
||||
page_table.pointers[page_index] + page_offset + (page_index << PAGE_BITS);
|
||||
DEBUG_ASSERT(pointer);
|
||||
const u8* src_ptr = pointer + page_offset + (page_index << PAGE_BITS);
|
||||
WriteBlock(process, dest_addr, src_ptr, copy_amount);
|
||||
break;
|
||||
}
|
||||
|
@ -498,34 +477,19 @@ struct Memory::Impl {
|
|||
return CopyBlock(*system.CurrentProcess(), dest_addr, src_addr, size);
|
||||
}
|
||||
|
||||
struct PageEntry {
|
||||
u8* const pointer;
|
||||
const Common::PageType attribute;
|
||||
};
|
||||
|
||||
PageEntry SafePageEntry(std::size_t base) const {
|
||||
std::lock_guard lock{rasterizer_cache_guard};
|
||||
return {
|
||||
.pointer = current_page_table->pointers[base],
|
||||
.attribute = current_page_table->attributes[base],
|
||||
};
|
||||
}
|
||||
|
||||
void RasterizerMarkRegionCached(VAddr vaddr, u64 size, bool cached) {
|
||||
std::lock_guard lock{rasterizer_cache_guard};
|
||||
if (vaddr == 0) {
|
||||
return;
|
||||
}
|
||||
|
||||
// Iterate over a contiguous CPU address space, which corresponds to the specified GPU
|
||||
// address space, marking the region as un/cached. The region is marked un/cached at a
|
||||
// granularity of CPU pages, hence why we iterate on a CPU page basis (note: GPU page size
|
||||
// is different). This assumes the specified GPU address region is contiguous as well.
|
||||
|
||||
u64 num_pages = ((vaddr + size - 1) >> PAGE_BITS) - (vaddr >> PAGE_BITS) + 1;
|
||||
for (unsigned i = 0; i < num_pages; ++i, vaddr += PAGE_SIZE) {
|
||||
Common::PageType& page_type{current_page_table->attributes[vaddr >> PAGE_BITS]};
|
||||
|
||||
const u64 num_pages = ((vaddr + size - 1) >> PAGE_BITS) - (vaddr >> PAGE_BITS) + 1;
|
||||
for (u64 i = 0; i < num_pages; ++i, vaddr += PAGE_SIZE) {
|
||||
const Common::PageType page_type{
|
||||
current_page_table->pointers[vaddr >> PAGE_BITS].Type()};
|
||||
if (cached) {
|
||||
// Switch page type to cached if now cached
|
||||
switch (page_type) {
|
||||
|
@ -534,8 +498,8 @@ struct Memory::Impl {
|
|||
// space, for example, a system module need not have a VRAM mapping.
|
||||
break;
|
||||
case Common::PageType::Memory:
|
||||
page_type = Common::PageType::RasterizerCachedMemory;
|
||||
current_page_table->pointers[vaddr >> PAGE_BITS] = nullptr;
|
||||
current_page_table->pointers[vaddr >> PAGE_BITS].Store(
|
||||
nullptr, Common::PageType::RasterizerCachedMemory);
|
||||
break;
|
||||
case Common::PageType::RasterizerCachedMemory:
|
||||
// There can be more than one GPU region mapped per CPU region, so it's common
|
||||
|
@ -556,16 +520,16 @@ struct Memory::Impl {
|
|||
// that this area is already unmarked as cached.
|
||||
break;
|
||||
case Common::PageType::RasterizerCachedMemory: {
|
||||
u8* pointer{GetPointerFromRasterizerCachedMemory(vaddr & ~PAGE_MASK)};
|
||||
u8* const pointer{GetPointerFromRasterizerCachedMemory(vaddr & ~PAGE_MASK)};
|
||||
if (pointer == nullptr) {
|
||||
// It's possible that this function has been called while updating the
|
||||
// pagetable after unmapping a VMA. In that case the underlying VMA will no
|
||||
// longer exist, and we should just leave the pagetable entry blank.
|
||||
page_type = Common::PageType::Unmapped;
|
||||
current_page_table->pointers[vaddr >> PAGE_BITS].Store(
|
||||
nullptr, Common::PageType::Unmapped);
|
||||
} else {
|
||||
current_page_table->pointers[vaddr >> PAGE_BITS] =
|
||||
pointer - (vaddr & ~PAGE_MASK);
|
||||
page_type = Common::PageType::Memory;
|
||||
current_page_table->pointers[vaddr >> PAGE_BITS].Store(
|
||||
pointer - (vaddr & ~PAGE_MASK), Common::PageType::Memory);
|
||||
}
|
||||
break;
|
||||
}
|
||||
|
@ -595,7 +559,7 @@ struct Memory::Impl {
|
|||
auto& gpu = system.GPU();
|
||||
for (u64 i = 0; i < size; i++) {
|
||||
const auto page = base + i;
|
||||
if (page_table.attributes[page] == Common::PageType::RasterizerCachedMemory) {
|
||||
if (page_table.pointers[page].Type() == Common::PageType::RasterizerCachedMemory) {
|
||||
gpu.FlushAndInvalidateRegion(page << PAGE_BITS, PAGE_SIZE);
|
||||
}
|
||||
}
|
||||
|
@ -610,20 +574,18 @@ struct Memory::Impl {
|
|||
"Mapping memory page without a pointer @ {:016x}", base * PAGE_SIZE);
|
||||
|
||||
while (base != end) {
|
||||
page_table.attributes[base] = type;
|
||||
page_table.pointers[base] = nullptr;
|
||||
page_table.pointers[base].Store(nullptr, type);
|
||||
page_table.backing_addr[base] = 0;
|
||||
|
||||
base += 1;
|
||||
}
|
||||
} else {
|
||||
while (base != end) {
|
||||
page_table.pointers[base] =
|
||||
system.DeviceMemory().GetPointer(target) - (base << PAGE_BITS);
|
||||
page_table.attributes[base] = type;
|
||||
page_table.pointers[base].Store(
|
||||
system.DeviceMemory().GetPointer(target) - (base << PAGE_BITS), type);
|
||||
page_table.backing_addr[base] = target - (base << PAGE_BITS);
|
||||
|
||||
ASSERT_MSG(page_table.pointers[base],
|
||||
ASSERT_MSG(page_table.pointers[base].Pointer(),
|
||||
"memory mapping base yield a nullptr within the table");
|
||||
|
||||
base += 1;
|
||||
|
@ -646,21 +608,13 @@ struct Memory::Impl {
|
|||
template <typename T>
|
||||
T Read(const VAddr vaddr) {
|
||||
// Avoid adding any extra logic to this fast-path block
|
||||
if (const u8* const pointer = current_page_table->pointers[vaddr >> PAGE_BITS]) {
|
||||
const uintptr_t raw_pointer = current_page_table->pointers[vaddr >> PAGE_BITS].Raw();
|
||||
if (const u8* const pointer = Common::PageTable::PageInfo::ExtractPointer(raw_pointer)) {
|
||||
T value;
|
||||
std::memcpy(&value, &pointer[vaddr], sizeof(T));
|
||||
return value;
|
||||
}
|
||||
|
||||
// Otherwise, we need to grab the page with a lock, in case it is currently being modified
|
||||
const auto entry = SafePageEntry(vaddr >> PAGE_BITS);
|
||||
if (entry.pointer) {
|
||||
T value;
|
||||
std::memcpy(&value, &entry.pointer[vaddr], sizeof(T));
|
||||
return value;
|
||||
}
|
||||
|
||||
switch (entry.attribute) {
|
||||
switch (Common::PageTable::PageInfo::ExtractType(raw_pointer)) {
|
||||
case Common::PageType::Unmapped:
|
||||
LOG_ERROR(HW_Memory, "Unmapped Read{} @ 0x{:08X}", sizeof(T) * 8, vaddr);
|
||||
return 0;
|
||||
|
@ -692,20 +646,12 @@ struct Memory::Impl {
|
|||
template <typename T>
|
||||
void Write(const VAddr vaddr, const T data) {
|
||||
// Avoid adding any extra logic to this fast-path block
|
||||
if (u8* const pointer = current_page_table->pointers[vaddr >> PAGE_BITS]) {
|
||||
const uintptr_t raw_pointer = current_page_table->pointers[vaddr >> PAGE_BITS].Raw();
|
||||
if (u8* const pointer = Common::PageTable::PageInfo::ExtractPointer(raw_pointer)) {
|
||||
std::memcpy(&pointer[vaddr], &data, sizeof(T));
|
||||
return;
|
||||
}
|
||||
|
||||
// Otherwise, we need to grab the page with a lock, in case it is currently being modified
|
||||
const auto entry = SafePageEntry(vaddr >> PAGE_BITS);
|
||||
if (entry.pointer) {
|
||||
// Memory was mapped, we are done
|
||||
std::memcpy(&entry.pointer[vaddr], &data, sizeof(T));
|
||||
return;
|
||||
}
|
||||
|
||||
switch (entry.attribute) {
|
||||
switch (Common::PageTable::PageInfo::ExtractType(raw_pointer)) {
|
||||
case Common::PageType::Unmapped:
|
||||
LOG_ERROR(HW_Memory, "Unmapped Write{} 0x{:08X} @ 0x{:016X}", sizeof(data) * 8,
|
||||
static_cast<u32>(data), vaddr);
|
||||
|
@ -726,15 +672,13 @@ struct Memory::Impl {
|
|||
|
||||
template <typename T>
|
||||
bool WriteExclusive(const VAddr vaddr, const T data, const T expected) {
|
||||
u8* page_pointer = current_page_table->pointers[vaddr >> PAGE_BITS];
|
||||
if (page_pointer != nullptr) {
|
||||
const uintptr_t raw_pointer = current_page_table->pointers[vaddr >> PAGE_BITS].Raw();
|
||||
if (u8* const pointer = Common::PageTable::PageInfo::ExtractPointer(raw_pointer)) {
|
||||
// NOTE: Avoid adding any extra logic to this fast-path block
|
||||
auto* pointer = reinterpret_cast<volatile T*>(&page_pointer[vaddr]);
|
||||
return Common::AtomicCompareAndSwap(pointer, data, expected);
|
||||
const auto volatile_pointer = reinterpret_cast<volatile T*>(&pointer[vaddr]);
|
||||
return Common::AtomicCompareAndSwap(volatile_pointer, data, expected);
|
||||
}
|
||||
|
||||
const Common::PageType type = current_page_table->attributes[vaddr >> PAGE_BITS];
|
||||
switch (type) {
|
||||
switch (Common::PageTable::PageInfo::ExtractType(raw_pointer)) {
|
||||
case Common::PageType::Unmapped:
|
||||
LOG_ERROR(HW_Memory, "Unmapped Write{} 0x{:08X} @ 0x{:016X}", sizeof(data) * 8,
|
||||
static_cast<u32>(data), vaddr);
|
||||
|
@ -755,15 +699,13 @@ struct Memory::Impl {
|
|||
}
|
||||
|
||||
bool WriteExclusive128(const VAddr vaddr, const u128 data, const u128 expected) {
|
||||
u8* const page_pointer = current_page_table->pointers[vaddr >> PAGE_BITS];
|
||||
if (page_pointer != nullptr) {
|
||||
const uintptr_t raw_pointer = current_page_table->pointers[vaddr >> PAGE_BITS].Raw();
|
||||
if (u8* const pointer = Common::PageTable::PageInfo::ExtractPointer(raw_pointer)) {
|
||||
// NOTE: Avoid adding any extra logic to this fast-path block
|
||||
auto* pointer = reinterpret_cast<volatile u64*>(&page_pointer[vaddr]);
|
||||
return Common::AtomicCompareAndSwap(pointer, data, expected);
|
||||
const auto volatile_pointer = reinterpret_cast<volatile u64*>(&pointer[vaddr]);
|
||||
return Common::AtomicCompareAndSwap(volatile_pointer, data, expected);
|
||||
}
|
||||
|
||||
const Common::PageType type = current_page_table->attributes[vaddr >> PAGE_BITS];
|
||||
switch (type) {
|
||||
switch (Common::PageTable::PageInfo::ExtractType(raw_pointer)) {
|
||||
case Common::PageType::Unmapped:
|
||||
LOG_ERROR(HW_Memory, "Unmapped Write{} 0x{:08X} @ 0x{:016X}{:016X}", sizeof(data) * 8,
|
||||
static_cast<u64>(data[1]), static_cast<u64>(data[0]), vaddr);
|
||||
|
@ -783,7 +725,6 @@ struct Memory::Impl {
|
|||
return true;
|
||||
}
|
||||
|
||||
mutable std::mutex rasterizer_cache_guard;
|
||||
Common::PageTable* current_page_table = nullptr;
|
||||
Core::System& system;
|
||||
};
|
||||
|
|
Loading…
Reference in a new issue